Oil collector for sewing machines



June 30, 1931. c. F. RUBEL ET AL OIL COLLECTOR FOR SEWING MACHINES Filed Feb. 27, 1928 2 Sheets-Sheet l June 30, 1931. c, RUBEL ET AL 1,812,377

OIL COLLECTOR FOR SEWING MACHINES Filed Feb. 27, 1928 2 Sheets-Sheet 2 Patented June 30, 1931 UNITEDSTATES PATENT OFFICE CHARLES F. RUBEL, OF CHICAGO, ILLINOIS, AND ELMER E. GRATSCH, OF ST. LOUIS,

MISSOURI, ASSIGNORS TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO,

' ILLINOIS, A CORPORATION OF ILLINOIS orn COLLECTOR roa SEWING MACHINES Application filed. February 27, 1928. Serial No. 257,532.

I The invention relates to new and useful improvements in oil collectors for sewing machines, and more particularly to a collector associated with a suspended work supporting arm for preventing oil thrown by the operating parts within the housing from collecting on the work supporting arm so as to soil the fabrics which are placed beneath and around the arm and fed oflf from the end of thearm during stitching. In this type of machine the operating parts must be provided so that access may be had to said parts at certain points in the trains of mechanism for the purpose of adjustment. It is also A desirable to form the work supporting arm separate from and j oinedto the housing member suspending the same. When the parts are operated at'high speed there is more or lessthrowing of the oil from the eccentrics against the-inner wall of the housing. The oil runs down the inner wall and escapes through these openings or the joint and finally collects at the outer side of the suspended arm'and thus it is that the oil soils the materials which are being stitched.

An object of the present invention is to provide a collector within the housing located above the openings which will catch any oil collecting on the inner wall of the housing and running down the same, and direct the oil away from the joint and openings so that it will not escape through the same.

A further object of the invention is to provide the collectingmeans with drip troughs 1 which are so disposed that the oil collected by said device'will be directed so as to drip onto the movable parts of the operating mechanisms beneath the openings for lubricating the'same.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed. Y Inthe drawings which show by way of illustration one embodiment of the invention Fig. 1 is a view partly in section and partly 1n side elevation of a portion of a machine embodying the invention.

Fig. 2 is a sectional view on the line 22.

machine having a suspended work supporting arm underneath which and around which the material is placed for stitching. The work supporting arm is joined to a depending member which is in the form of a housing.

The work supporting arm is also in the form of a housing so that the operating mechanism for the actuated parts at the free end of the work supporting arm is housed within the arm and the depending member. These actuating devices are preferably operated by eccentric members disposed at the upper end of the depending member. In order that proper access may be had to the connections between the several members forming the actuating trains the housing is preferably provided with covered openingsf In such machines the oil thrown by the eccentrics often collects on the inner wall of the depending member and running down said wall escapes through the joint and covered openings and thus is enabled to collect on the lower face of the suspended arm.

The material when placed beneath the arm and around the same for stitching tubular garments is likely to become soiled from the oil thus collecting around the arm. The present invention is directed broadly to a collecting device which will prevent the oil from collecting or accumulating on the inner wall of the housing and escaping through said openings as described. This collecting device is in the form of a gasket as shown in the present embodiment of the invention which is placed between the work supporting arm and the lower end of the depending member.

This gasket is made of soft metal and when clamped between the parts will not only be rigidly held but also make a tight joint. The gasket also projects inwardly and is shaped so as to form a collecting chamber for the shownand described in the application filed by Joseph Berger, February 15, 1926, Serial Number 88,298. In this typeof machine there is a housing in which the main actuating shaft is mounted and extending downwardly from said housing is a depending memberor housing 1. This depending member 1 open at its lower end. A work supporting arm. 2 which is preferably cylindrical in form is attached to the lower end of the depending member 1 and closes the same. The arm is connected to the depending member by suit able b0lts3, 3 which pass through lugsfi ecarried by the depending member. 1 and are threaded into lugs 5, 5 formed as a part of the work supporting arm.

7 At the free end of the arm there is a presser foot 6 and the material being stitched passes underneath this presser foot and is'fedj or from the endof the arm, One. needle only of the stitching mechanism is indicated at 7. The looper cooperating with the needle or needles iscarried by a shaft 8 which is moved endwise by a link 9 in order to give the looper a needle avoiding..niovement The .link is sleeve 1141!. also carries'an arm 13.

connected to an arm lOmountedion a sleeve 11a- The sleeve 11a is oscillated on a sta tionary supporting shaft 11 by a pitman '12 which, in turn. cooperates with aneccentric member on the main actuatingshaft. The Alink 15 attached to'said arm-13 is connected to the feed bar for moving thesame back and forth.

The feed bar is raised and lowered by a lever 16 which is connected to a. pitman 17. This pitman also cooperates with an eccentric member on the main shaft. The loop-er shaft is oscillated by a pitman 18 which preferably cooperates with a crank on the main shaft.

In the side face of the work supporting arm there is an opening 19 which is closed by a sliding cover 20. p This enables the operator to readily gain access to the connections for the link '9 for the purpose of adjustment. In

the other face of the work supporting arm there is an opening 21 which is closed by a. cover plate 22. For the purpose of aiding in the assembling of parts there is an opening 23 at the end of the worlrsupporting arm 2 and this is closed by a. cover-plate 2'4. These parts may be greatly modified and are only described for the purpose of making clear the necessity and function of applicants oil collecting device.

In a machine of the above type -;the oil thrown by the rotating eccentric members and crank collects on the inner wall of the depending member and running down said inner wall has heretofore escaped through the covered openings and collected at the under side of the work supporting arm. The oil thus collected on the arm is liable to soil the materials ,being stitched. Applicants have provided a collecting device which in .the. present embodiment of the invention comprises a copper gasket 25, This gasket i p e ween the lowe and i then?- pe d g mem r and the uppe ace at th Wo k s pp t ng a m which i jo n d th et The gasket will'therefore .be clamped firmly between the Pa t y t e clamping belt 3, Th a et as cl a ly sh wniin the d a gs, e ds al h way around the depending member and projects inwardly to member. {The inner edge of the gasket 25 is indicatedat 26. Between the inner wall and the inner edge of the gasket the gasket i n or ow d downwa ly a ind ca ed point well in from the inner wall of said t 2 (Fig- 5) h o ms are ep ade 9.

. c l ing ch m j28 T e il runningrionn h inner Wal lth dep i g arm! wil str ke h g k t a d il f w ou wa dly an the gasket into this collecting chamber 'I eg sk is al Pro id d with nwa dly ng rough A shown Fig- .3 i i th l aWi lgS Ii n toi r rc gl th se troughs are indicated respectively at 29 :39, 31, and 32. A'sshown in Fig. {l' the trough leads from the loviifiSt point inthe chamber '28 and the bottom wall of the, chamber 28 is preferably shaped so as to drain toward the troughs. It will readily be'seen that the oil collecting in. this chamber 28 will run out t h the tr ugh p r ded and hipf om the troughs. The 'end of the trough'is well in from the side wall of the depending :memher and, therefore, the oil cannot possibly collect on thein ner wallofthe worksupporting arm above these covered openings so as to escape through" the openings. The troughs are preferably arranged so that the oil dripping therefrom will lubricate connections in the actuating' mechanisms. The

trough '29 for example, will direct the oil dripping therefrom ontothe link 9 and said therewith. The oil from the trough find its way to the movable connections associated with the pitman 17. The oil from the trough 31 will find its way to the movable connections directly associated with the pitman 12, while the oil from the trough 30 will find its way to the movable connections associated with the arm 13 and link 15.

It has been found in working that where no gasket is used in the joint between the arm and the depending member that oil is likely to seep through the joint and escape to the outer face of the arm as well as passing through the covered openings. The gasket, however, performs the double function of tightly sealing the joint between the work supporting arm and the depending member as well as collecting the oil and directing it away from the openings. The gasket is preferably made of copper so that a tight sealed joint will be made when the parts are attached together.

From the above description it will be apparent that we have provided an oil collecting device which insures that no oil used for lubricating the actuating parts will escape through the covered openings and collect on the outer face of the work supporting arm so as to soil the material being stitched; it will also be noted from the above description that we have not only collected the oil and prevented the objectionable use of the same, but we have directed the collected oil so that it will be useful in lubricating the actuated parts.

It is obvious that minor changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

Having fully described our invention, what we claim as new and desire to secure by Letters-Patent, is: 1. In a sewing machine a housing for the actuated parts, said housing having covered openings whereby access may be had to certain of said actuated parts and a collecting device attached to the housing above the covered openings, extending all the way across said openings and disposed relative to the inner wall of the housing so as to catch oil collecting on the inner wall of the housing and prevent the oil from escaping through said covered openings.

2.,In a sewing machine a housing for the actuated parts, said housing having covered openings whereby access may be had to certain of said actuated parts and a collecting device attached to the housing above the covered openings, extending all the way across said openings and disposed relative to the inner wall of the housing so as to catch oil collecting on the inner wall of the housing and prevent the oil from escaping through said covered openings, said collecting device having troughs formed as a part thereof extending inwardly from the collecting device and positioned so as to cause the collected oil to drip onto the actuating parts of the mechanism beneath the same.

'3. In a sewing machine a housing for the actuated parts including a depending member a work supporting arm mounted at the lower end of said depending member and a collecting device clamped between the arm and the depending member and projecting inwardly from the inner wall of said depending member, said collecting device being shaped so as to provide a collecting chamber for oil accumulating on the inner wall of the depending member and running down the same, said oil collecting device being provided with a series of drip troughs extending inwardly and positioned so as to direct the oil collecting in the chamber onto the actuated parts beneath the same.

4. In a sewing machine a housing having a depending member, a work supporting arm attached to the lower end of said depending member said arm having covered openings whereby access may be had to parts within said arm and a gasket placed between the end of the depending member and the work supporting arm connected thereto and secured by the clamping bolts which clamp the arm to the depending member, said gasket being extended inwardly from the inner wall of the depending member and shaped so as to form a collecting chamber for the oil accumulating on the inner wall of the depending member and running down the same, said gasket having a series of inwardly projecting troughs for directing the oil from said oil collecting chamber onto the actuated parts beneath the same.

5. In a sewing machine a housing for the actuated parts including a depending member, a work supporting arm mounted at the lower end of said depending member, a gasket disposed between the depending member and the work supporting arm and projecting inwardly from the inner wall of said depending member, said gasket being shaped so as to provide a collecting chamber for oil accumulating on the inner wall of the depending member and running down the same.

6'. In a sewing machine a housing for the actuated parts including a depending member, a work supporting arm mounted at the lower end of said depending member, a gasket disposed between the depending member and the work supporting arm and projecting inwardly from the inner wall of said depending member, said gasket being shaped so as to provide a collecting chamber for oil accumulating on the inner wall of the depend ing member and running down the same, said gasket having a series of drip troughs extending inwardly from the inner edge thereof, and positioned so as to direct the oil colle ti1 ginth c. am er @11 119 ac u ted Parts beneath th Ms me- 7. In a sewing ma hine a housing for the actua d parts ncluding a detach b Q vsup-p l tim'q a d m ns cated betea sai de aghable Wp-rk s ppprting arm ndth "-lmllsing Wi PI JQGtiDg ithin the housing flihin 9. elleq ing 9 1 1 inner, wal

' f-tbQhQH iDg nd d recting the oil inwardly away 0. 1; the Wall. and Onto the gciu a tgfl Pari b neai .7 11. tes mony w sr eqf, W1; aifiz; 01,11 i ainma- CHARLES RUBEL,

GBATSQH 

